User`s manual

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iNspect Express User’s Manual405-00026-00

51Rev 1600; 12 July 2010

• CheckSum – test for the CheckSum or check character. The checksum is required in Code128,

EAN8, EAN13, UPCa, UPCe, and Postnet/Planet. Checksum is optional in Code39, BC412,

and ITF. There is no checksum in Codabar, RSS14 and all Pharmacodes.

• Sub-Pixel – enables detecting width-modulated barcodes to sub-pixel accuracy, but increases

processing or read time.

• Contrast – intensity range in the barcode Region. Use the Full range from black to white (0 to

255) or computed (calculated) based on the range of intensities found in the Region.

• Minimum Level (%) – set the minimum contrast level, that separates light from dark, or code

from background. This is a percentage of the Contrast Range.

• Vicinity – the width and height of an area around the barcode, in pixels, where additional codes

will be ignored.

• Min char # – minimum number of characters in a code. Fail if below this number.

• Max char # – maximum number of characters in a code. Fail if above this number.

f. Click on the padlock button

to lock the value for “Expression” so it does not change if

you move or resize the Region, or change parameters.

g. Click the “Preprocess” button

to add image filtering, or feature enhancement. Adding

preprocessing may increase inspection time. Please refer to page 15.

h. Click the “check” button

to accept changes and close the Barcode Properties box. Click

the X button

to close without changes.

Using the 2-D Barcode Tool

The 2-D Code tool reads Data Matrix and QR codes. Light, lens, focus, exposure and

distance (size of the code in the image) affect the ability to read a 2D code.

a. Click on the “2D Barcode” button. You can select Data-

Matrix, QR-Code or PDF417 if you know the code type,

or select “Auto detect” in the drop-list that appears at the

right in the Configuration and Status panel.

b. Move the mouse over the image in the Work Area. You

should not see highlighted edges. Click, release, move the

mouse and click again, to draw a rectangle around the Code.

When the 2-D Code tool is selected, you can move and resize

the rectangle.